WorksheetsBlockchain quiz
Total questions: 55
Worksheet time: 55mins
What is a node?
A type of cryptocurrency
A Blockchain
A computer on a Blockchain network
An exchange
What does P2P stand for?
Password to Password
Peer to Peer
Product to Product
Private Key to Public Key
Where do you store your cryptocurrency?
Bank account
Exchange
Wallet
In your pocket
Where is the LEAST SAFE place to keep your cryptocurrency
In your pocket
On an exchange
On a hot wallet
At your work desk
Who created Bitcoin?
Satoshi Nakamoto
John Mcafee
Samsung
China
What is a miner
A type of blockchain
An algorithm that predicts the next part of the chain
A person doing calculations to verify a transaction
Computers that validate and process blockchain transactions
Where can you buy cryptocurrency
A private transaction
An exchange
A Bitcoin ATM
All of the above
A blockchain is secured by
PIN code
'hash' code
password
login
The process of encrypting and decrypting information.
Decentralized Application
Cryptocurrency
Block
Cryptography
How does Blockchain achieve high availability?
Complex Protocol
Decentralization
Nodes never go down(offline)
Implemented on the internet
Each block of a Blockchain consists of which of the following?
A hash pointer to the previous block
Timestamp
List of transactions
All of the above
What is a genesis block?
The first block of a Blockchain
A famous block that hard coded a hash of the Book of Genesis onto the blockchain
The first block after each block halving
The 2nd transaction of a Blockchain
Once data entered into the blockchain can be
Unchanged
Modified
Tampered
Updated
What is the meaning of "Crypto"?
Something that is hidden or concealed.
A type of grave where someone is buried.
Software
Hardware
What is a bitcoin?
Programming Language
England's Currency
A Digital Currency
None of the Above
The "blockchain" is data that copied across thousands and thousands of computers worldwide
True
False
_______is the process of solving complex mathematical equation?
Hash Matching
Genesis
Proof of work
Proof of stake
Bitcoin and Blockchain mean the same thing
True
False
Maybe
I don't know
A block also contains hash of the________.
block before it.
block after it.
block above it.
block below it.
It is a unique digital asset that represents ownership of real-world items like art, video clips, music, and more.
Blockchain
NFT
Cryptocurrencies
Bitcoins
Which of the following Blockchain technologies is preferred by consortiums with trusted members who trade sensitive information?
Hybrid Blockchains
Public Blockchains
Private Blockchains
Permissioned Blockchains
Which of the following is the verified proof of Blockchain Technology?
earnings
name and address
location
transactions
What is the primary benefit of immutability?
Scalability
Tamper-proof
Resiliency
Increased efficiency
By its definition, what is a blockchain?
A centralized ledger
A type of cryptocurrency
An exchange transaction
A distributed ledger on a peer to peer network
What is a bitcoin?
Programming Language
England's Currency
A Digital Currency
None of the Above
How are "bitcoins" produced?
Governments supporting the "bitcoin" currency
Computers using their processing power to facilitate and store transactions.
Mines in the ground
All of the Above
Which of the following is popularly used for storing bitcoins?
wallet
box
stack
How does one acquire
bitcoins?
As payment for goods or
services.
Purchase bitcoins at a
Bitcoin exchange.
Exchange bitcoins with
someone near you.
Earn bitcoins through
competitive bitcoin mining.
all of the above
Bitcoin can only be controlled by the central bank.
True
False
Each block of a Blockchain consists of which of the following?
A hash pointer to the previous block
Timestamp
List of transactions
All of the above
What is a genesis block?
The first block of a Blockchain
A famous block that hard coded a hash of the Book of Genesis onto the blockchain
The first block after each block halving
The 2nd transaction of a Blockchain
What is the total number of bitcoins that can be mined?
19.5M
20M
21M
Most is the most common reason for losing bitcoin?
Connection went down when purchasing bitcoin
Lost public key
Lost login to wallet app
Lost private key
How are new bitcoins generated?
Bitcoin miners process transactions and collect new bitcoins in exchange
Bitcoin platforms release new bitcoins
Bitcoin miners create new bitcoin in the software called blockchain
Which blockchain is supported by Microsoft Azuze?
Bitcoin
Factom
Etherum (QUORUM)
The main concept of Proof Of Stake is ___
Full nodes with least coins at stake get to create the next block.
Full nodes with most coins at stake get to delete a block
Full nodes with the least coins get to delete a block
A. Full nodes with most coins at stake get to create the next block.
If two different nodes add the same file, then __
Their hashes will be different
The hashes will be the same
Their hashes will be same provided the file name are the same
The crypto that has the highest market capitalisation
Bitcoin
Ethereum
Dogecoin
What is an Ethereum?
Open software platform based upon Blockchain technology
Private software platform based upon Blockchain technology
Technology used in banks
Centralized platform
What is a Smart Contract?
Contract written on paper
Code with rules in the Ethereum network
What type of hash function is used, when there is variable number of items to be hashed, such as the many state changes in a block?
Complex hash
Tree-structured Hash
Simple Hash
Either
Keccak 256 is a commonly used algorithm for hash generation in Ethereum blockchain. True or False?
TRUE
FALSE
In Ethereum, the block hash is the hash of all the elements in the _________ .
Transaction hash tree
Receipt tree
Block header
State tree
Merkle tree hash is used for computing _________ hash.
(select all correct answers)
state root
transaction root
receipt root
state tree
Block hash allows for the formation of the chain link by embedding previous block hash in the current block header. True or False?
TRUE
FALSE
A paper-based contract
